Ecological Balance in Aquatic Systems
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Questions and Answers

Which nutrient imbalance can lead to algal blooms in aquatic systems?

  • Oxygen deficiency
  • Potassium excess
  • Nitrogen deficiency
  • Phosphorus excess (correct)

    • What is a consequence of excessive algal blooms in aquatic environments?

  • Improved plant photosynthesis
  • Enhanced biodiversity
  • Reduced oxygen levels (correct)
  • Increased light penetration

    • What role do predatory fish play in aquatic systems?

  • Increase the nitrogen levels
  • Filter out pollutants
  • Control the population of prey fish (correct)
  • Enhance plant growth

    • Which of the following consequences is likely if predatory fish populations decrease?

    <p>Increase in prey fish populations</p> Signup and view all the answers

    How can nutrient imbalances affect the chemical composition of water?

    <p>Cause production of toxic compounds</p> Signup and view all the answers

    What role do predatory fish play in an aquatic ecosystem?

    <p>They maintain a balance between prey fish and other organisms.</p> Signup and view all the answers

    What could be a consequence of a decline in predatory fish populations?

    <p>Excessive increase in small fish populations.</p> Signup and view all the answers

    How does energy flow in an aquatic food web?

    <p>From producers to consumers.</p> Signup and view all the answers

    What are zooplankton?

    <p>Organisms that float in water and are part of the food chain.</p> Signup and view all the answers

    What is the function of coral reefs in aquatic ecosystems?

    <p>They help in maintaining marine ecosystem balance.</p> Signup and view all the answers

    What can be a consequence of the overfishing of marine animals?

    <p>Extinction of certain species</p> Signup and view all the answers

    How do predatory fish contribute to the ecological balance in marine ecosystems?

    <p>They regulate the population of smaller organisms.</p> Signup and view all the answers

    What is the primary effect of increasing fertilizers in agricultural drainage water?

    <p>Abnormal algal blooming</p> Signup and view all the answers

    Which of the following is a major consequence of pollution in aquatic systems?

    <p>Decrease in certain species</p> Signup and view all the answers

    What is a significant impact of environmental destruction on marine life?

    <p>Reduction of biodiversity</p> Signup and view all the answers

    What is one way people can actively participate in environmental decision-making?

    <p>Participating in public platforms and forums.</p> Signup and view all the answers

    Which of the following is considered an eco-friendly practice?

    <p>Using public transportation or bicycles.</p> Signup and view all the answers

    What is one consequence of pressure from organizations on governments regarding environmental policies?

    <p>Increase in pollution regulations.</p> Signup and view all the answers

    Which of the following actions contributes to maintaining environmental balance?

    <p>Sorting wastes.</p> Signup and view all the answers

    Which of the following is NOT a method for individuals to participate in environmental policies?

    <p>Ignoring environmental issues.</p> Signup and view all the answers

    What is a consequence of environmental destruction?

    <p>Destruction of natural habitats</p> Signup and view all the answers

    Which action best describes how humans can preserve natural resources?

    <p>Using resources sustainably</p> Signup and view all the answers

    What role does environmental awareness and education play in ecological balance?

    <p>It informs people about their environmental impact</p> Signup and view all the answers

    Sustainable development aims to achieve which of the following?

    <p>Meet the needs of the current generation without harming future generations</p> Signup and view all the answers

    How can individuals participate in environmental policies effectively?

    <p>By actively participating in environmental decision-making</p> Signup and view all the answers

    Study Notes

    Ecological Balance

    • It is a state of dynamic stability that occurs when the living organisms in an ecosystem interact in a way that maintains the continuity of life.

    Importance of the ecological balance in the aquatic systems

    1. The nutrients balance

    • In aquatic systems, such as lakes and rivers, there must be a balance in the levels of nutrients.
    • Nitrogen and phosphorus are essential for the growth of plants and algae that form the base of the aquatic system food chain.
    • In case of:
      • Decreasing or Increasing the nutrients in the aquatic systems, this leads to a disturbance in the aquatic ecosystem.
      • Example: The excessive increase in the nutrients as in case of pollution by fertilizers can lead to the abnormal algal blooming.
      • Abnormal algal blooming
        • Deficiency in oxygen, when large amounts of algae died, they are decomposed by bacteria, leading to highly consumption of large amounts of oxygen.
        • Coverage of the water surface, as algae can cover the water surface, preventing the entry of light to depths which affects the photosynthesis process of other aquatic plants.
        • Changing the chemical composition of water, as some types of algae produce toxic compounds.
        • Negative impacts on the biodiversity of the aquatic ecosystem.

    2. The balance among living organisms

    • In aquatic systems, each species of organisms interacts with others in multiple ways, whether as preys or predators for resources.
    • The presence of predatory fish in an aquatic ecosystem contributes to maintaining a balance between the numbers of prey fish and other organisms.
    • Example: The marine environment contains different types of fish, if the number of predatory fish decline (for example, due to overfishing), this might lead to:
      • The excessive increase in small fish, leading to unbalanced consumption of food resources
      • Causing a disruption in the aquatic ecosystem.

    3. The energy flow through the food web

    • (Scientific background - Food chain)
    • It is a diagram that expresses the flow of nutrients and energy from one organism to another in an ecosystem, starting with the producers, then consumers till ending with the decomposers.

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    Description

    Explore the intricate dynamics of ecological balance within aquatic systems. This quiz focuses on the importance of nutrient levels, the impact of pollution, and the consequences of algal blooms that disrupt these ecosystems. Test your knowledge on maintaining the health of lakes and rivers.

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